The office’s closure strips Homeland Security of a key internal check and balance, analysts and former staff say, as the Trump administration morphs the agency into a mass-deportation machine. The civil rights team served as a deterrent to border patrol and immigration agents who didn’t want the hassle and paperwork of an investigation, staff said, and its closure signals that rights violations, including those against U.S. citizens, could go unchecked.

The office processed more than 3,000 complaints in fiscal year 2023 — on everything from disabled detainees being unable to access medical care to abuses of power at Immigration and Customs Enforcement and reports of rape at its detention centers. For instance, following reports that ICE had performed facial recognition searches on millions of Maryland drivers, [an Office for Civil Rights and Civil Liberties] investigation led the agency to agree to new oversight; case details have been removed from the DHS website but are available in the internet archive. The office also reported to Congress that it had investigated and confirmed allegations that a child, a U.S. citizen traveling without her parents between Mexico and California, had been sexually abused by Customs and Border Protection agents during a strip search.

Those cases would have gone nowhere without CRCL, its former staffers said.

“Nobody knows where to go without CRCL, and that’s the point,” a senior official said. Speaking of the administration, the official went on, “They don’t want oversight. They don’t care about civil rights and civil liberties.”